According to Andrew Hussie, technology or inscriptions that allowed the creation of Sburb were found by Grandpa in the Frog Temple. This makes it likely that he had contact with Skaianet, or that in fact he founded the company himself to release the game. This would be in line with Grandma being the founder of the company in the post-scratch universe. The name "Skaianet" is likely a parody of "Skynet" from the Terminator series. The name also relates to Skaia very transparently.